Organisms and Populations Question 5
5. Benthic organisms are affected most by
[NEET Kar. 2013]
(a) Water-holding capacity of soil
(b) Light reaching the forest floor
(c) Surface turbulence of water
(d) Sediment characteristics of aquatic ecosystems
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Answer : d
Hints & Solutions
(d) The sediment characteristics often determine the type of benthic animals that can thrive there. The benthic zone is one of the ecological regions of a body of water. It comprises the bottomsuch as the ocean floor or the bottom of a lakethe sediment surface, and some sub-surface layers. Organisms living in this zone-that is, on or in the bottom of the body of water-are called benthos.
